I am have a problem playing The Bureau: XCOM Declassified - chapter 3 signals from beyond, when I inside of the outpost in the back yard, the door is not opening the color of the door light is in orange and it’s not turning in to blue to open even after I kill all the enemies including the snipers

do any one know how to fix it or do any one have save files for The Bureau: XCOM Declassified it will be great and helpful